Bobbin-stripper.



Kim.

Patented Oct. 2'7, 1914.

4 SHEETS-SHEET 1.

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THE NORRIS PETERS co #HOTo-UTHQ, wAsHlNGmN, D4 c.

B. H. RYONL BOBBIE STRIPPER. APPLICATION FILED DEG,12, 1913.

1, 1 1 5, 1 1 5, Patented 0015.27, 1914.

4 SHEETS-SHEET Z.

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movnmab THE NORRIS PETERS C0. FHOTO-LITI1 I, WASHING roN. D c.

E. H. RYON.

BOBBIN STRIPPER.

APPLICATION FILED DEG.12, 1913.

Patented Oct. 27, 1914.

4 SHEETS-SHEET 3.

THE NORRIS PETERS 50., PHOTO-LlTHU-. WASHINGTON, n. c.

E. H. RYON.

BOBBIN STEIPPER. APPLIOATIOH FILED DEC. 12, 1913.

4 SHEETS-SHEET 4.

Patented Oct. 27, 1914.

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THE NORRIS PETERS 60.. PHOTO 11.17%: WASHINGTON. D c,

EPPA H. EYON, OF WALTHAM, MASSACHUSETTS, ASSIGNOR TO GROMPTON 8: KNOWLESLOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHU-SETTS.

BoBBIn-s'rnIPPnn;

Application filed December 12, 1913.

To all to 7mm it may concern:

Be it known that I, EPPA H. Bron, a citizen of the United States,residing at Waltham, in the county of Middlesex and State ofMassachusetts, have invented a new and useful Bobbin-Stripper, of whichthe following is a specification.

This invention relates to a per, especially designed to remove wasteyarn from bobbins which have been ejected from an automatic fillingreplenishing loom of the so-called feeler type. The bobbins used in suchlooms are formed with a straight cylindrical portion near the butt, uponwhich portion is usually placed a preliminary winding or bunch offilling yarn before the regular winding is placed upon the bobbin. henin position in the shuttle, this cylindrical portion coacts with afeeler or detecting device upon the loom which controls the operation ofthe filling replenishing mechanism. As soon as the amount of yarn uponthe bobbin has been reduced to a predetermined point, the feeler allowsthe replenishing mechanism to become operative to eject the used bobbinand to insert a full bobbin in place thereof. A small amount offillingyarn is necessarily left upon the ej ected bobbin which must beremoved therefrom before the bobbin can be again used. It has been thecommon practice to remove this waste yarn by cutting it from the bobbinwith a knife or by loosening the yarn upon the bobbin by striking thenose of the bob bin sharply upon a. rigid block, the yarn thereafterbeing slipped off of the end of the bobbin. These manual methods havebeen found to seriously injure the bobbins and to impair their length ofservice, and consequently certain mechanical devices have been designedto remove the waste from the bobbins. The more common type of suchdevices has consisted essentially of a combination of devices forgripping or supporting a single bobbin and a stripping device movablelongitudinally of the bobbin to loosen the yarn and force it off fromthe end of the bobbin.

The object of the present invention is to increase the capacity andspeed of operation and to improve the general efficiency of machines forperforming the operation above described. With this object in view, afeature of the present invention contemplates the provision of bobbinsupporting means Specification of Letters latent.

bobbin strip- Patented Oct. 27, 1914.

Serial No. 806,317.

v operable to support and guide the bobbins poth before and after thestripping operalon.

Another feature of the invention contemplates the provision of aplurality of gripping and stripping devices movable successively intooperative position, thus eliminatmg loss of time during idle movementsof the stripping devices. Provision is also made for feeding thesupported bobbins intermittently to the gripping and stripping mechanismand the feeding device is mounted to yield without injuring itself orthe work should the bobbin for any reason become caught in the path ofthe feeding finger. As a further safeguard I have provided a stop motiondevice by which the machine will be disconnected from its driving meansif a bobbin is improperly positioned between the gripping devices.

To the accomplishment of the objects of my invention above referred to,the invention consists of certain devices, arrangements andcombinations, of parts which will be hereinafter described and moreparticularly polnted out in the appended claims.

A preferred form of the invention is shown in the drawings in which-- 1Figure 1 is an end elevation of the bobbin stripper; Fig. 2 is a lefthand side elevation of the machine shown in Fig. 1; Fig. 3 is a top planview of the gripping and feeding mechanism; Fig. l is a cross sectiontaken along the line H of Fig. 1; Fig. 5 is a detailof the grippingdevices; Fig. 6 is a partial end elevation wit to show the stoppi a viewsimilar to echanism; Fig. 7 is I 6 showing the parts in a different posiA Fig. 8 is a detailof certain parts of the. opping mechanism; and Fig.9 is a perspective View of one of the stripper plates.

In the embodiment of the invention illustrated in the drawings, a frame'10 is pro vided upon which is vertically supported a rotatable barrel.11. A similar barrel 12 is mounted in bearings in a pivoted supportingarm 13, (Fig. 2) the barrel 12 when in normal position beingsubstantially parallel to the barrel 11. The arm 13 is extended at itsupper end to form a sleeve 1% to which is pivoted a rod 15 (Fig. 1)which passes loosely through a lug upon the sleeve 16 forming the upperend of the frame 10. A spring 18 surrounds the rod certain parts omittedits ends-, with a laterally extending lug 31, to project over the nutstripper plate 25 which 15 and is secured between the lug .upon thesleeve 16 and anut19 upon .the end of the rod 15, said spring tendingconstantly to swing the barrel 12 toward the right, as viewed in Fig. 1.A loosespacing sleeve 20 surrounds the rod '15 and abuts against thelugs upon the sleeves 14 andlG, there? y securing the rotatable barrels11. and 12 in spaced relation, while the sity arise. Each of 21 (Figs.1,3 and tially encircle and thereto. Reference the bobbin. I

' The barrelsll and a plurality of and in flat sides mounted to slide. A

a threaded nut plate 26. permitsthe plates 25 to axially upon thebarrels venting their disengagement therefrom. Each stripper end alateral] cess 27%(Fig. 9)

ilar in' contour to ping members 21. each 1ate2'5 there as to contactwith oneof and 29 (Figs. 1 and 2) tric'ally with. the barrels cam 29 issecured cam 29 is mounted port 13 and'i's mova times retaining its thebarrel 12. v v a A non-rotatable re 11 and 12.

on the pivoted supbarrel ll and is provided, intermediate of (Fig. 1)adapted plate 26' of that happens to be in lower end of the cross, arm32 shown in land is adjustable longitudinally thereon by lock nuts 33. Asimilar rod 34 extends operative position. The

- through the barrel l2 and is pivoted at its The rod projection 31.

lower endtoithe cross arm 32.

34 is provided with a lateral in the same mannerkas isthe rod 30.

A cam roll 35 (Fig. is secured to the yielding egn nection permits themto be temporarily separated at their upper ends, should fneces-gthe'barrels 11 and 12. has rigidly secured at its upper end, a disk; 5formedfwith a plurality of recesses 22 each adapted to pargrip a bobbinpresented; to Fig.1 will show that? the gripping members 21 grasps-thebob'binf between the butt and the bun'chjof waste? yarn left upon thecylindrical portion of:

12 may be formed with J' as shown 'inFig. 4g any-event are provided witha; plurality of longitudinally extending slots "23 within which blocks248(Fig. 1) are vertically extending stripper plate 25lisis'e'oured toeach block 4 by sc'rews'extending 'therethrough into, "This constructionbe freely movable .5 11 or12 whilepre-i plate 25 has at, its upper;projection27 having a retherein substantially simthe recesses in thegrip- F At the lower endjof. I v is also a slight lateral pro ection 28and the lower edge of the plate 25 and the projection 28 is so disposed.the fixed cams 29. mounted concen-g The to the' frame 10 and'the erewiththus'at all trio relation with I 30 is mounted to; slide longitudinallyin bearings within the rod, 30- 18 secured to a dotted linesin Fig.

and ,coacts with a double-acting cam 36 mounted upon acani shaft 37. Abevel gear and iswdriven by a pinion 39 'se'cured toj the driving shaft40. This shaft may be power by any tight and loose pulleys 41 and 42 andthe driving belt 43.

versely in the frame of, the machine and the positionf' o f the beltspring'46 (Fig. 7) is securedat one end to the shipper and at itsopposite end to a fixed part 'of the machine and tends con? stantlyto'throw the beltonto the loose pulley. s a The means employedforflgiving'an in-. Z termitte'nt rotation to the barrels 11 and- 12comprises a one-tooth locking (Fig. '4) secured'to the'cam shaft37 and00- operating with an intermittent gear 48 secured to the lower end ofthebarrel ll.

- held in'fix'ed angular position by the look ing portion 51 of thepinion 47. Inthe position'of the gears shownin Fig. :4 the intermittentear 48 has just completed its partial angular rotation and the lockingportion '51of the pinion has partially engaged and locked the gear 48ther angular movement. This locking engagement will continue until thepinion 47 has substantially completed its revolution. Inclined guides orsupports 52 are provided for the bobbins, the guides upon the. frontside of the machine right in Fig. 53 (Fig.2) upon the frame 10, asbyscrews 53, while the guides upon the rear side are secured to thefront guides by arched connections 54. Thus supported, movement of thepivoted arm 13 will not-result in sepa ration of the guides 52. Theguides52 are extended horizontally toward the discharge end of themachine, as shown at 52 port the bobbins as Ehey leave the strippingmechanisms. The bobbins B are suspended by their butts on the guides-52and are moved yby gravity proximity of the gripping devices 21. Inaddition to the gravity feed, afeeding finger 56 (Figs. 1 and 3)engageseach bobbin as it approaches the gripping mechanism and pushes itpositively forward within reach of the grippers .21. l "The feedingfinger 56 is part of aslotted 38 1S also mounted upon the cam shaft.

i 'providedith shipper fingers45 by which I may be controlled. A 8O(shown to the 1) belng secured to a'bracket to supcross arm 32 betweenthe rods 30 and 34 connected with any convenient source. of suitablemeans such as the.

Q shipper 44'is mounted to slide transpinion 47 Thefbarrel 1-1 is alsoprovided; with a' spur against fur- I along the guides into i arm 57which is mounted to slide upon a block 58 (Fig. 3) pivoted to the frame10 at 59. In the end of the slotted arm 57 there is a bearing for acrank pin 60 secured by a crank arm 61 to the upper end .of the crankshaft 62. The crank shaft 62 is suitably supported in bearings upon theframe 10 and has mounted upon its lower end a sprocket 63 (Fig. 1). Asimilar sprocket 64 is secured to the lower end of the cam shaft 37 andthe sprockets are connected by a sprocket chain 65 so that the crankshaft 62 will make one revolution for each revolution of the cam shaft87. The direction of rotation of the shaft 62 is such that the crank pinwithdraws the feeding finger from contact with the bobbins during itsreturn stroke and advances the same during its feeding stroke topositively push the bobbins forward to the gripping devices.

In order to prevent injury either to the feeding finger or to thebobbins in the event thatone of the bobbins for any reason cannot beadvanced to the gripping devices, I have provided a yielding connectionbetween the crank pin and the feeding finger by forming one side of theslotted arm 57 as a separate member 66 (Fig. 3) pivoted to the arm 57 at67. A stud 68 is mounted in the end of the arm 57 and passes freelythrough a hole in the corresponding end of the arm 66. A spring 69surrounds the stud 68 and is suitably secured at one end thereto, beingso disposed as to force the arms 57 and 66 normally into contact witheach other. When the normal movement of the feeding finger is prevented,the spring 69 will yield and permit separation of the arms 57 and 66.After the obstruction is removed, the parts automatically return totheir usual relative positions.

The operation of my machine as thus far described is as follows Thebobbins B are suspended by their butts in the guides 52, the placing ofthe bobbins within these guides constituting the only manual laborrequired in the operation of the machine. The bobbins move graduallydownward toward the gripping devices and are ultimately moved forward bythe feeding finger 56 at the same instant that a cooperating pair of therecesses 22 upon the disks 21 approaches operative position. As thebobbin advances and is gripped between the disks 21, it is alsopartially encircled by a pair of projecting flanges 27 upon the stripperplates 25.

The fixed cams 29 are of such contour that the stripper plates reachtheir extreme upper limit of travel just before they are moved tooperative position, and the cams are also so shaped, that the plates,when moved into operative position, are unsupported by the cams and arefree to be moved downward in the slots 28 of the bar- 'rels 11 and 12.As the plates 25 come into operative position, they stop below theprojecting lugs 31 upon the sliding rods 50 and 34, which rods areimmediately thereafter given a downward movement by the cam 36. Thisforces the stripper plates 25 downward and, as the projections 27 uponthe plates encircle the cylindrical portion of the bobbin above thebunch of waste yarn thereon, the yarn is carried downward by the platesand is thus separated from the bobbin.

As the stripping devices approach the lower limit of their travel, thefeeding device operates to eject the stripped bobbin and to feed thenext bobbin into stripping position. The stripped bobbins travel alongthe horizontal guides 52 and may be thereafter disposed of by causingthem to drop into a suitable receptacle or in any other desired way.During their passage through the machine, the lower ends of the bobbinsB may be guided by additional guiding members 70 secured to the frame10. It sometimes happens that a bobbin will not be properly advanced tothe gripping device and will be-caught between the projectionsseparating the recesses 22 in the disks 21. In this event, the barrel 12will yield and move to the left as viewed in Fig. 1, thus preventingbreakage of any of the operative parts of the machine. As this yieldingmovement of the barrel. 12 does not usually release the caught bobbin, 1have provided connections by which the outward. movement of the barrelcan operateto stop the machine.

The shipper 4a, previously referred to, is provided with a pair of slots71 (Fig. 7) through which a pair of studs 72 are passed to support theshipper to slide upon the frame 10. In the upper side of the shipper 44there is provided a notch 73 so located that when the belt is shiftedonto the tight pulley, the notch 73 will be caught by a latch 7 4tpivoted at 7 5 to the frame 10. The

latch 7 & has secured thereto an arm 76 (Fig. 8) which extends over theouter end of an arm 77 securely fastened to the lower part of thesliding rod 84.

As shown in Figs. 6 and 7, the parts just mentioned are so adjusted thatwhen the shaft Set is in its normal position parallel to the shaft 30,the arm 77 will permit the latch 7a to engage the notch 7 3. When therod 3 1 is swung outwardly, as in the event of a bobbin being caughtbetween the gripping members, the end of the arm 77 will be raised andwill in turn raise the arm 76 of the latch 7 l and release the shipper.A screw 7 8 and lock nut 79 provide adjustment between the arms 76 and77. It is therefore evident that outward movement of the barrel 12 andshaft 3% will normally release the shipper and stop the machine. Itsometimes happens, however, that the yarn upon I caught by the upperposition,

a particular bobbin is so tightly wound that bythe.

it cannot be forced oif from the bobbin the stripping plates 25. In thisevent plates are dragged over the bunch and may force the barrel 12outwardly in the same manner as when a p the gripping devices. It is notnecessary to stop the machine under these conditions and accordingly thestop ously described is so arranged that such outward movement of thelease the shipper. This result is obtained by proper adjustment of thearm 77 upon the rod 34. When the rod 3A as it will be during the feedingof the fresh bobbin into the machine, the arm 77 should be so locatedvertically that it can cooperate with the arm 76' and latch 74 to stopthe machine if a bobbin is grippers. As soon as the feeding operation isended,

the bobbin and in so doing, the arm 77 is separated from the arm 76 sothat the barrel 12 and the rod 34: may thereafter be swung outwardly butthe arm 77 will not raise the latch and release the shipper.

It should be understood that I do not limit this part of my invention touse with the particular driving and shipping mechanism herein disclosedand that it is within the scope of my invention to connect the stoppingdevices herein described to release any form of driving device which itmay be found convenient to use in the machine.

Having thus described my invention it will be clear that many changesand modifications can be made therein by one skilled in the art Withoutdeparting from the spirit and scope thereof and I do not wish to belimited to the details herein disclosed, but

l/Vhat I claim is v 1. A bobbin stripper having in combination, meansfor supporting a bobbin, a plurality of stripping devices, and means formoving said devices successively into operative position.

2. A bobbin stripper comprising a plurality of gripping and strippingdevices, andmeans for intermittently moving said devices in successivepairs into operative position.

3. A bobbin stripper comprising in combination, gripping and strippingdevices, and means for moving said devices in a continuous pathalternately into operative and inoperative positions.

4:. A bobbin stripper, having in combina tion, bobbin supporting means,a plurality of pairs of stripping devices successively presented inoperative position and movable longitudinallyiof the bobbins to stripthe same, and means to return the stripping devices to their'formerlongitudinal position while they are out of operative position.

bobbin is caught between;

motion device previ-.

barrel 12 will not re-,

is in its extremehowever, the rod 34: begins its downward movement tostrip circle the barrel 5. A bobbin nately locking them'againstrotation, means for positively moving said stripping devices Ylongitudinally of the barrels bobbins whilethe barrels are the;stripping devices in operative position, and meansfor returning the:stripping dc to strip the locked with vices to their former longitudinalposition while they are out of operative position.

6. A bobbin stripper, comprising a rotatable member, a stripping deviceon said member, means to alternately rotate said member'and to lock thesame in successive angular positions, means to givesaid strip.- plngdevice its. operative movement while said member is locked in a singleposition, and means for gradually returning the stripping device tonormal position asv the memposition's.

7. A stripping device having in combination a member mounted to rotatein fixed vertical bearings, a second member normally parallel to thefirst member and mounted in bearings on a pivoted support, means forintermittently rotating the first member, gears on said members by whichthe first member may drive the second member, a plurality of grippingdevices and stripping devices mounted on said members and cooperating insuccessive pairswhen inoperative position, and means for moving thestripping devices longitudinally of the members to strip the bobbins.

8. A bobbin stripper having in combination a plurality ofrotatable-barrels, a plurality of pairs of stripping devices mounted toslide longitudinally of the barrels, fixed cams concentric with thebarrels tomove the stripping devices in one direction and reciprocatingmembers to positively drive the stripping devices in the oppositedirection. i

9. A bobbin stripper, having in combination a pairof verticallysupportedrotatable barrels, a disk on each barrel having a plurality ofgripping recesses therein, a corresponding number of vertically movablestripping devices supported on each barrel,

cams to raise said stripping devices, and members positively actuated toforce said stripping devices downward to strip the bobbins. V r

10. In a bobbin stripper, in combination a pair of vertically mountedrotatable barrels, a disk on each barrel having a plurality of grippingrecesses therein, a pair of sliding blocks mounted in longitudinal slotsin her is advancedthrough successive angular said barrels, each blockhaving a plate with aradial projection adapted to partially enof abobbin, .and means for alternately moving the blocks in oppositedirections.

11. In a bobbin stripper, a supporting frame, longitudinally slottedbarrels rotatale therein, means to rotate the barrel, a plurality ofstripping devices mounted on the barrel and longitudinally movable inthe slots, means for moving the stripping devices in one direction and asliding rod for moving them in the opposite direction, said rod beingnon-rotatably mounted concentric with said barrel and having a lugprojecting from one side thereof and contacting with each of saidstripping devices as the latter are rotated into operative position,said rod acting through the lug to move the stripping devices axially ofthe slotted barrel to strip a bobbin.

12. A bobbin stripper having in combination a pair of rotatablecooperating griping members, guides for the bobbins and intermittentlyoperated mechanism for sliding the bobbins along the guides into thepath of the rotatable gripping members.

18. In a bobbin stripper, in combination, a pair of rotahble cooperatinggripping members, guides upon which a plurality of bobbins may besuspended by their butts, and means for intermittently sliding saidsuspended bobbins along the guides into the path of the rotatablegripping members.

1%. A bobbin stripper having in combination a pair of cooperatinggrippers, stripping mechanism, guides for the bobbins, means for feedingthe bobbins from said guides to said grippers and stripping mechanism,and devices for driving said feeding means, the driving devices andfeeding means being yieldingly connected and temporarily separable underexcessive pressure.

15. In a bobbin stripper, in combination, a supporting structure uponwhich a plurality of bobbins may be suspended by their butts, grippingand stripping mechanism located intermediate the ends of said structure,and means for intermittently feeding the suspended bobbins along thesupporting structure to and past the gripping and stripping mechanism.

16. A bobbin stripper, having in combination a pair of gripping membersmounted to rotate in opposite directions on substantially pa allel axes,means to support a bobbin, and means to advance said bobbin into thepath of the rotating gripping members.

7. In a bobbin stripper, feeding mechanism comprising a pivoted block, aslotted Copies of this patent may be obtained for l arm and crank pinthereon,

five cents each, by addressing the arm mounted to both pivot and slideon said block, and a rotatable shaft having a crank arm and crank pinthereon, said slotted arm having a bearing for said pin and beingoperable thereby.

18. In a bobbin stripper, feeding mechanism comprising a pivoted block,a slotted arm mounted to both pivot and slide on said block, and arotatable shaft having a crank said slotted arm having a bearing forsaid pin and being 0perable thereby, the two sides of the slotted armbeing pivoted together and yieldingly connected to be separable underexcessive strain.

19. A bobbin stripper, having in combination gripping members, strippingmechanism, means for driving the gripping members and the strippingmechanism, and c0nnections between the gripping members and the drivingmeans whereby abnormal separation of the gripping members will disengagethe driving means.

20. A bobbin stripper, having in combination grippers, strippingmechanism, driving means therefor, and a stop motion device renderedoperative by abnormal separation of the grippers when the strippingmechanism is at the upper limit of its travel only.

21. A bobbin stripper, having in combination a pair of grippers yildingly held in spaced relation, stripping mechanism, driving means forthe grippers and stripping mechanism, a shipper, a latch to hold saidshipper in operative position, and means actuated by abnormal separationof the grippers to disengage said latch and release the shipper.

22. A bobbin stripper, having in combination a pair of grippersyieldingly held in spaced relation, stripping mechanism movablelongitudinally of the bobbin, driving means, devices to render saiddriving means operable and a release for said devices actu ated byabnormal separation of the grippers when the stripping mechanism is inits highest position but unaifected by such separation after the descentof the stripper has begun.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

EPPA II. RYON.

Witnesses:

ERNEST R. LLEWELLYN, Ones. A. HAWLEY.

Commissioner of Eatents,

Washington, D. 0.

